19 Building and construction materials having a polymeric or cement base, namely boards, slabs, flooring, roofing, interior and exterior walls; concrete building materials namely blocks, bricks, posts, poles, slabs and panels; asphalt; pitch; mortar, bitumen, sealers and cement mites for new construction, maintenance and rehabilitation industries; grout; fillers, namely cement or polymer-based patching materials for filling voids in concrete surfaces